47787498 has 72 divisors (see below), whose sum is σ = 117080964. Its totient is φ = 14065920.

The previous prime is 47787497. The next prime is 47787517. The reversal of 47787498 is 89478774.

47787498 is a `hidden beast` number, since 4 + 77 + 87 + 498 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43996689 + 3790809 = 6633^2 + 1947^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47787497) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80290 + ... + 80882.

Almost surely, 2^47787498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47787498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58540482).

47787498 is an abundant number, since it is smaller than the sum of its proper divisors (69293466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47787498 is a wasteful number, since it uses less digits than its factorization.

47787498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 646 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 47787498 is about 6912.8502081269. The cubic root of 47787498 is about 362.8870171796.

The spelling of 47787498 in words is "forty-seven million, seven hundred eighty-seven thousand, four hundred ninety-eight".